EP 0368497 B1 19950125 - Dynamic head position tracking control for a magnetic tape playback system.
Title (en)
Dynamic head position tracking control for a magnetic tape playback system.
Title (de)
Dynamische-Kopflagen-Spursteuerung für ein Magnetbandsystem.
Title (fr)
ContrÔle d'asservissement dynamique de la position d'une tête pour un système de lecture à bande magnétique.
Publication
Application
Priority
US 26927988 A 19881109
Abstract (en)
[origin: EP0368497A2] A dynamic head position tracking control for a magnetic tape playback system employs a detected dither signal to determine the elevational position of a pair of magnetic transducing heads relative to tracks of recorded information being scanned by the heads. This detection is carried out at several locations along the lengths of the tracks being scanned, and a value is stored for each of the locations. Based upon the stored information, an estimation is made of a position value for the first location along the length of the tracks. This estimation is determined from a weighted extrapolation of the following two samples taken during the scan of the track. The elevational position of the heads is then dynamically controlled in accordance with the actual and estimated head position values.
IPC 1-7
IPC 8 full level
G11B 5/588 (2006.01)
CPC (source: EP KR US)
G11B 5/588 (2013.01 - EP US); G11B 20/00 (2013.01 - KR)
Designated contracting state (EPC)
AT DE FR GB NL
DOCDB simple family (publication)
EP 0368497 A2 19900516; EP 0368497 A3 19910522; EP 0368497 B1 19950125; AT E117825 T1 19950215; DE 68920822 D1 19950309; DE 68920822 T2 19950907; JP H02183412 A 19900718; JP H0821168 B2 19960304; KR 0169712 B1 19990320; KR 900008496 A 19900604; US 4935827 A 19900619
DOCDB simple family (application)
EP 89310804 A 19891020; AT 89310804 T 19891020; DE 68920822 T 19891020; JP 29016789 A 19891109; KR 890016163 A 19891108; US 26927988 A 19881109